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प्रश्न
Which of the following oxides behaves as conductor or insulator depending upon temperature?
विकल्प
TiO
SiO2
TiO3
MgO
उत्तर
TiO3
Explanation:
TiO3 behaves as conductor or insulator depending on temperature because of variation of energy gap between valence band and conduction band with the variation of temperature.
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संबंधित प्रश्न
To prepare n-type semiconductor the impurity to be added to silicon should have the following number of valence electrons:
(a) 2
(b) 3
(c) 4
(d) 5
Distinguish between p-type and n-type semiconductors.
What is the ratio of octahedral holes to the number of anions in hexagonal closed packed structure?
To get n-type of semiconductor, germanium should be doped with ____________.
p-type semiconductors are formed when Si or Ge are doped with ____________.
Which of the following is true about the charge acquired by p-type semiconductors?
Under the influence of electric field, which of the following statements is true about the movement of electrons and holes in a p-type semiconductor?
(i) Electron will move towards the positvely charged plate through electron holes.
(ii) Holes will appear to be moving towards the negatively charged plate.
(iii) Both electrons and holes appear to move towards the positively charged plate.
(iv) Movement of electrons is not related to the movement of holes.
A perfect crystal of silicon (Figure) is doped with some elements as given in the options. Which of these options show n-type semiconductors?
Explain why does conductivity of germanium crystals increase on doping with galium.
How does the doping increase the conductivity of semiconductors?
